Probabilistic choice: Difference between revisions
Content added Content deleted
(Added Wren) |
m (→{{header|REXX}}: changed comments and whitespace.) |
||
| Line 2,692: | Line 2,692: | ||
=={{header|REXX}}== |
=={{header|REXX}}== |
||
Note: REXX can generate random numbers up to 100,000. |
Note: REXX can generate random numbers up to a range of 100,000. |
||
<lang rexx>/*REXX program displays results of probabilistic choices, gen random #s per probability.*/ |
<lang rexx>/*REXX program displays results of probabilistic choices, gen random #s per probability.*/ |
||
parse arg trials digs seed . /*obtain the optional arguments from CL*/ |
parse arg trials digs seed . /*obtain the optional arguments from CL*/ |
||
if trials=='' | trials=="," then trials= |
if trials=='' | trials=="," then trials= +1e6 /*Not specified? Then use the default.*/ |
||
if digs=='' | digs=="," then digs= |
if digs=='' | digs=="," then digs= 15 /* " " " " " " */ |
||
if datatype(seed, 'W') then call random ,,seed /*allows repeatability for RANDOM nums.*/ |
if datatype(seed, 'W') then call random ,,seed /*allows repeatability for RANDOM nums.*/ |
||
numeric digits digs /*use a specific number of decimal digs*/ |
numeric digits digs /*use a specific number of decimal digs*/ |
||
names= 'aleph beth gimel daleth he waw zayin heth ───totals───►' /*names of the cells.*/ |
names= 'aleph beth gimel daleth he waw zayin heth ───totals───►' /*names of the cells.*/ |
||
hi= 100000 /*max REXX RANDOM num*/ |
|||
z=words(names); |
z= words(names); #= z - 1 /*# ≡the number of actual/usable names.*/ |
||
$= |
$= 0 /*initialize sum of the probabilities. */ |
||
do n=1 for #; prob.n=1 / (n+4); if n==# then prob.n= 1759 / 27720 |
do n=1 for #; prob.n= 1 / (n+4); if n==# then prob.n= 1759 / 27720 |
||
$=$ + prob.n; Hprob.n=prob.n * |
$= $ + prob.n; Hprob.n= prob.n * hi /*spread the range of probabilities. */ |
||
end /*n*/ |
end /*n*/ |
||
prob.z= |
prob.z= $ /*define the value of the ───totals───.*/ |
||
@.= |
@.= 0 /*initialize all counters in the range.*/ |
||
@.z= |
@.z= trials /*define the last counter of " " */ |
||
do j=1 for trials; r=random( |
do j=1 for trials; r= random(hi) /*gen TRIAL number of random numbers.*/ |
||
do k=1 for # |
do k=1 for # /*for each cell, compute percentages. */ |
||
if r<=Hprob.k then @.k=@.k + 1 |
if r<=Hprob.k then @.k= @.k + 1 /* " " " range, bump the counter*/ |
||
end /*k*/ |
end /*k*/ |
||
end /*j*/ |
end /*j*/ |
||
_= '═' /*_: |
_= '═' /*_: padding used by the CENTER BIF.*/ |
||
w=digs + 6 |
w= digs + 6 /*W: display width for the percentages*/ |
||
d=4 + max( length(trials), length('count') ) |
d= 4 + max( length(trials), length('count') ) /* [↓] display a formatted top header.*/ |
||
say center('name',15,_) center('count',d,_) center('target %',w,_) center('actual %',w,_) |
say center('name',15,_) center('count',d,_) center('target %',w,_) center('actual %',w,_) |
||
do cell=1 for z /*display each of the cells and totals.*/ |
do cell=1 for z /*display each of the cells and totals.*/ |
||
say ' ' left( word(names, cell), 13) |
say ' ' left( word(names, cell), 13) right(@.cell, d-2) " ", |
||
left( format( prob.cell * 100, d), w-2), |
left( format( prob.cell * 100, d), w-2), |
||
left( format( @.cell/trials * 100, d), w-2) |
left( format( @.cell/trials * 100, d), w-2) |
||